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<div class="title">pool.c</div>  </div>
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<a href="a00818.html">浏览该文件的文档.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160; </div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="a03629.html">precomp.h</a>&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#pragma hdrstop</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160; </div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160; </div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#ifdef POOL_TAGGING</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160; </div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;PVOID <a class="code" href="a00899.html#a03d02ed8ee9ce61a7e12fc736296ec49">_UserReAllocPoolWithTag</a>(</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;    PVOID pSrc,</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;    ULONG uBytesSrc,</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;    ULONG uBytes,</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;    ULONG iTag)</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;{</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;    PVOID pDest;</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160; </div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;    pDest = UserAllocPool(uBytes, iTag);</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;    <span class="keywordflow">if</span> (pDest == NULL)</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;        <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    </div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="comment">     * If the block is shrinking, don&#39;t copy too many bytes.</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    <span class="keywordflow">if</span> (uBytesSrc &gt; uBytes)</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;        uBytesSrc = uBytes;</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160; </div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    RtlCopyMemory(pDest, pSrc, uBytesSrc);</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160; </div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    UserFreePool(pSrc);</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160; </div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;    <span class="keywordflow">return</span> pDest;</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;}</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160; </div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;PVOID <a class="code" href="a00899.html#a26faa09b610f8bf2e539882771871eba">_UserReAllocPoolWithQuotaTag</a>(</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    PVOID pSrc,</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    ULONG uBytesSrc,</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    ULONG uBytes,</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    ULONG iTag)</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;{</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    PVOID pDest;</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160; </div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    pDest = UserAllocPoolWithQuota(uBytes, iTag);</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    <span class="keywordflow">if</span> (pDest == NULL)</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;        <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;    </div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="comment">     * If the block is shrinking, don&#39;t copy too many bytes.</span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    <span class="keywordflow">if</span> (uBytesSrc &gt; uBytes)</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;        uBytesSrc = uBytes;</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160; </div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    RtlCopyMemory(pDest, pSrc, uBytesSrc);</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160; </div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    UserFreePool(pSrc);</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160; </div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    <span class="keywordflow">return</span> pDest;</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;}</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160; </div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160; </div>
<div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="a00899.html#a11956f5d7192b9539f68c7ac50429541">   70</a></span>&#160;PVOID <a class="code" href="a00818.html#a11956f5d7192b9539f68c7ac50429541">_UserReAllocPool</a>(</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;    PVOID pSrc,</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    ULONG uBytesSrc,</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    ULONG uBytes)</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;{</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    PVOID pDest;</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160; </div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;    pDest = UserAllocPool(uBytes, TAG_NONE);</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    <span class="keywordflow">if</span> (pDest == NULL)</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;        <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    </div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="comment">     * If the block is shrinking, don&#39;t copy too many bytes.</span></div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    <span class="keywordflow">if</span> (uBytesSrc &gt; uBytes)</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;        uBytesSrc = uBytes;</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160; </div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;    RtlCopyMemory(pDest, pSrc, uBytesSrc);</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160; </div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    UserFreePool(pSrc);</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160; </div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;    <span class="keywordflow">return</span> pDest;</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;}</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160; </div>
<div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="a00899.html#aad71a8cbb701859653df551e48aa6dea">   94</a></span>&#160;PVOID <a class="code" href="a00818.html#aad71a8cbb701859653df551e48aa6dea">_UserReAllocPoolWithQuota</a>(</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    PVOID pSrc,</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;    ULONG uBytesSrc,</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    ULONG uBytes)</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;{</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;    PVOID pDest;</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160; </div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;    pDest = UserAllocPoolWithQuota(uBytes, TAG_NONE);</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    <span class="keywordflow">if</span> (pDest == NULL)</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;        <span class="keywordflow">return</span> NULL;</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;    </div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="comment">     * If the block is shrinking, don&#39;t copy too many bytes.</span></div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;    <span class="keywordflow">if</span> (uBytesSrc &gt; uBytes)</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;        uBytesSrc = uBytes;</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160; </div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;    RtlCopyMemory(pDest, pSrc, uBytesSrc);</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160; </div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;    UserFreePool(pSrc);</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160; </div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    <span class="keywordflow">return</span> pDest;</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;}</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160; </div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;<span class="preprocessor">#endif  // POOL_TAGGING</span></div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160; </div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;<span class="comment"> * Allocation routines for rtl functions</span></div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160; </div>
<div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="a00818.html#aa4c5df31e4454c1b801c9cc8dc49ed7f">  124</a></span>&#160;PVOID <a class="code" href="a00818.html#aa4c5df31e4454c1b801c9cc8dc49ed7f">UserRtlAllocMem</a>(</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;    ULONG uBytes)</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;{</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;    <span class="keywordflow">return</span> UserAllocPool(uBytes, TAG_RTL);</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;}</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160; </div>
<div class="line"><a name="l00130"></a><span class="lineno"><a class="line" href="a00818.html#a11e5f86f5ec24b989012a66ead19ac73">  130</a></span>&#160;VOID <a class="code" href="a00818.html#a11e5f86f5ec24b989012a66ead19ac73">UserRtlFreeMem</a>(</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    PVOID pMem)</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;{</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;    UserFreePool(pMem);</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;}</div>
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<div class="ttc" id="aa00818_html_aa4c5df31e4454c1b801c9cc8dc49ed7f"><div class="ttname"><a href="a00818.html#aa4c5df31e4454c1b801c9cc8dc49ed7f">UserRtlAllocMem</a></div><div class="ttdeci">PVOID UserRtlAllocMem(ULONG uBytes)</div><div class="ttdef"><b>Definition:</b> <a href="a00818_source.html#l00124">pool.c:124</a></div></div>
<div class="ttc" id="aa00818_html_aad71a8cbb701859653df551e48aa6dea"><div class="ttname"><a href="a00818.html#aad71a8cbb701859653df551e48aa6dea">_UserReAllocPoolWithQuota</a></div><div class="ttdeci">PVOID _UserReAllocPoolWithQuota(PVOID pSrc, ULONG uBytesSrc, ULONG uBytes)</div><div class="ttdef"><b>Definition:</b> <a href="a00818_source.html#l00094">pool.c:94</a></div></div>
<div class="ttc" id="aa03629_html"><div class="ttname"><a href="a03629.html">precomp.h</a></div></div>
<div class="ttc" id="aa00899_html_a03d02ed8ee9ce61a7e12fc736296ec49"><div class="ttname"><a href="a00899.html#a03d02ed8ee9ce61a7e12fc736296ec49">_UserReAllocPoolWithTag</a></div><div class="ttdeci">PVOID _UserReAllocPoolWithTag(PVOID pSrc, ULONG uBytesSrc, ULONG uBytes, ULONG iTag)</div></div>
<div class="ttc" id="aa00818_html_a11956f5d7192b9539f68c7ac50429541"><div class="ttname"><a href="a00818.html#a11956f5d7192b9539f68c7ac50429541">_UserReAllocPool</a></div><div class="ttdeci">PVOID _UserReAllocPool(PVOID pSrc, ULONG uBytesSrc, ULONG uBytes)</div><div class="ttdef"><b>Definition:</b> <a href="a00818_source.html#l00070">pool.c:70</a></div></div>
<div class="ttc" id="aa00899_html_a26faa09b610f8bf2e539882771871eba"><div class="ttname"><a href="a00899.html#a26faa09b610f8bf2e539882771871eba">_UserReAllocPoolWithQuotaTag</a></div><div class="ttdeci">PVOID _UserReAllocPoolWithQuotaTag(PVOID pSrc, ULONG uBytesSrc, ULONG uBytes, ULONG iTag)</div></div>
<div class="ttc" id="aa00818_html_a11e5f86f5ec24b989012a66ead19ac73"><div class="ttname"><a href="a00818.html#a11e5f86f5ec24b989012a66ead19ac73">UserRtlFreeMem</a></div><div class="ttdeci">VOID UserRtlFreeMem(PVOID pMem)</div><div class="ttdef"><b>Definition:</b> <a href="a00818_source.html#l00130">pool.c:130</a></div></div>
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